Paper feeding machine



No. meme. 1 Patented Jan. 3|, I899. L. eEno.

PAPER FEEDING MACHINE.

(Application filed May 15, 1897.) (No Model.) 2 Sheets-Sheet I.

WELZ'WMJM; Invent ma NORRIS vans co., FHDTO-LITHO, WASHINGTON u c No. 6l8,409. Patented Jan. 3|, I899.

' L. GERU.

PAPER FEEDING MACHINE.

2 SheetsSheet 2-- (Application filed May 15, 1897.) (No Model.)

N GE ATENT Fries.

LOUIS GERC), OF BUDA-PESTH, AUSTRIA-HUNGARY.

PAPER-FEEDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 618,409, dated January 31, 1899.

I Application filed May 15, 1897. Serial No. 636,821. (No model.)

To (tZZ whom it may concern.-

Be it'known that I, LOUIS GERG, a subject of the King of Hungary, and a resident of the city of Buda-Pesth, Austria-Hungary, have invented certain new and useful Improvements in Automatic Paper-Feeding Devices for Printing-Presses, of which the following is a specification.

Many forms of automatic paper-feeding de- Vices for steam printing-presseshave proved unserviceable because they raised with the top sheet of the pile the sheet immediately adhering thereto and carried them along for a greater or less distance toward the printing-cylinder, and thus caused interruption of work.

In these machines the following defects occur: First, the paper sheet is seized on too large a surface, so that the adhesion between the first sheet and the second and third sheets under it can take effect; second, the paper sheet is carried along on the next sheet while it is taken off, and thereby the second sheet is displaced; third, the sheet must travel too far to reach the printing-cylinder, whereby either the work becomes slower or when the feeding is quickened the lifting becomes so sudden that two or more sheets are carried along; fourth, the pneumatic gripper isin constant motion, so that the lower sheet when carried along is given no time to fall back on the paper pile; fifth, although devices for holding down the pile automatically have been employed they are in no organic connection with the feeding appliance, whereby the disadvantage arises that the sheet which has been lifted along and returned to the paper pile cannot be brought again under the contrivance which efiects the holding down, and therefore the sheet lies loosely, and, sixth, finally, there are constructions in which the suction-pipes make suitable movements, but seize the lowest sheet of the paper pile, so that the whole weight of the latter will rest on the sheet to be pulled out.

The most essential disadvantages of this arrangement are that the feeding of single sheets is not assured and that, on the other hand, the sheet pulled from under the pile is under strong tension and therefore tears easily. My object is to avoid all these objections.

In the drawings, Figure 1 shows the general arrangement of the device in side view with parts in section, wherein all parts not pertaining to the present invention are omitted. Fig. 2 is a plan view of Fig. 1, partly in section. Fig. 3 shows in diagram the suctioncylinder and the parts for effecting partial return rolling of same in the position in which the top sheet is taken from the paper pile. Fig. 4 shows in detail the position of the suction-cylinder after it has rolled back in its guiding-frame for the purpose of delivering the sheet which has just been taken ofi to the printing-cylinder. Fig. 5 is a section along the line 5 5 of Fig. 1, looking in the direction of the arrow. Fig. 6 shows a hook which holds down the paper pile and the setting appliance of the hook in perspective. Fig. 7 shows in detail the crank arranged on the axle of the suction-pipe and the tappet effecting its turning over.

The feeding-table a, Fig. 1, is arranged near the printing-cylinder, so that the sheet to be laid in c, Fig. 3, will have to travel as short a distance as possible. The table is atomatically raised by means of parallel links d d and a weighted lever 2, linked to the table, and this movement takes place each time the paper is taken from the top of the pile s. The pile is held on the table in such a manner that no sheet can be displaced during the work. For this purpose angle-irons g, of suitable height, are arranged at both sides .of the paper pile, Fig. 2, and in the horizontal flanges of same cross slits g are provided, through which the screw-bolts 9 pass to fasten the angle-irons on the frame. These slits g allow a lateral adjustment of the angle-irons to suit any width of paper sheets.

At the rear side of the paper pile hooks h are arranged, Fig. 1, which are fastened on arms h of the machin e-frame in such a mannor that the table can move freely under them and that the surface'of the paper pile is always kept in close contact with them. In

order to adapt these hooks to the length of the paper, slits h are provided in the hooks, as shown clearly in Fig. 6, so that the hooks can be adjusted by loosening the nuts 7L2 and fastened within the limits allowed by the length of the slits.

At the front of the paper pile holding-down finger-st are arranged for the purpose of holding the paper pile, Figs. 1 and 2. These holding-down fingers are fastened on doublearmed levers L, pivoting around the pinion 71. The double-armed levers are linked with leversj, which are moved by a curved disk j keyed on the shaft 97. in such a manner that the holding-down fingers 2' can be raised from the paper pile and laid on it again.

The suction-pipe 7.1 has a round cross-section of suitable form and has a suitable nu mber of free spaces 0, Fig. 2, which correspond with the grippers p of the printingcylinder and the holding-down fingers i of the paper pile.

The axle-journals 7t" of the suction-pipes 7t pivot in blocks k and these blocks are set into rectangular slideways l. The hollow j ournal 7.; extends beyond the block and carries at its free extremity the toothed wheel to,

the toothed wheel f and the crank-lever v.

The rack n is fastened under the frame Z, and it gears with the toothed wheel a, while the toothed wheel f" can be engaged with the segment f. This segment is set on one arm of the angle-lever, pivoted at f the other arm of which is actuated by the cam-disk r, keyed on the shaft 72.. The frame Z and all parts mounted thereon are carried by one arm of the angle-lever m, pivoted at 'm, the other arm being linked to the bar n actuated by the cam 01.

The suction-pipe 7.: is bedded eccentrically in relation to its axle 7t 7t, and its suctionholes are situated nearly on the edge of the spaces 0. The suction-pipe will then he upon the top sheet in such a manner that its suction-holes are at the front edge of the sheet. The particular advantage of the eccentric bearing of the suction-pipe is to be found in the fact that when it is turned in the direction of the arrow 1, Fig. 1, after having seized a sheet the latter will not only be drawn along, but it is also taken off in the measure of the suction-pipes eccentricity, thus avoiding a displacement of the sheets under the top sheet.

The axle-journals 7. of the suction-pipe are hollow and are connected by a hose (1 with an air-pump of known construction, which is omitted from the drawings. A three-Way cook 00 is inserted in this hose q, Fig. 1, the plug of which is turned away by means of levers from the cam y, keyed on the main shaft in such a manner that it connects the hose (1 either with the pump or by the pipe-socket with the atmosphere.

The device works in the following manner: Supposing that the suction-pipe is be just placed on the front edge of the top sheet, which is still held down by the holding-down fingers i and hooks 7L, the air is now pumped from the suction-pipe through the hose q, whereby the top sheet lays itself on the suction-holes of the suction-pipe 70, as above referred to, at the same time the camj actuates the angle-lever 7." through the rod j in the manner that the holding-down fingers are raised from the paper pile in Fig. 1, while, on the other hand, the cam 0' moves the segment 25 from right to left by means of anglelevers 25 into the position shown in Fig. 3, whereby the toothed wheel t which is in engagement with the segment 6, is turned in the direction of the arrow 1, Fig. 1. The toothed wheel turns the axle 7a and therewith the toothed wheel it, which is thereby forced to run along the rack to and moves the suctionpipe during its revolution over the paper pile, the revolution being caused by segment '2! and toothed wheel t Thereby the top sheet 0 is pulled out from under the hook 7L and placed on the suction-pipe for some short distance, Fig. 3. Then a moment of rest occurs to give the second next sheet that may have been lifted along time to fall back on the paper pile. In the meantime the cam 17., with its eccentric part, has reached out and takes the frame Z with the suction-pipe 7.; and the seized sheet 0 away from the paper pile by means of the bar 17. and the angle-lever m and carries it to the printing-cylinder b.

The preliminary lifting of the frame Z is advantageous, because the toothed wheel 0 is thereby disengaged from the segment i, and the suction-pipe will remain at the right-hand end of the frame Z with its gear in mesh with the rack or", and the pipe will remain in this position until its crank strikes the tappet w, as will hereinafter be described. As soon as the segment t is released from the toothed wheel 25 it is pulled back to its starting position by the spring f acting upon the lever i while the hooks fall back at the same time and hold the paper pile down again. While rolling back on the paper pile the suctionpipe has arrived into the position 7c, Fig. 7, and the crank keyed on the extremity of its shaft has reached the position 1;, Fig. 7. Now the suction-pipe, with its frame, is moved around the pivot-center m toward the printing-cylinder, and in this movement the crank, as indicated by the line I, strikes the tappet 10, so that the crank is turned over during the forward movement of the frame and remains with its extremity on the upper surface of the tappet w in the position v, in which the suction-pipe delivers the sheet to the catchers of the printing-cylinder. Owing to this turn of the crank 'v the toothed wheel 14 has been rolled back on the rack U0 by the same distance as formerly in consequence of the engagement of toothed wheel t and segment t. In other words, the suction-pipe is rolled back in its bearings in the manner that the edge of the sheet seized by it is situated below and can be taken up by the grippers 19. After this has been done the suction-pipe,'with I the crank, as indicated in the lines II III, is

guided back to the pile in the same position correspondingly to the frame Z. At the moment when the suction-pipe 70 has reached the printing-cylinder the disk 3 stops the cock w. The latter stops thereby the way to the pump IIO and lets the atmospheric air pass into the suction-pipe 70 through the upright tube .2 and said tube to allow the sheets of the pile to settle down and means for operating the front catches, substantially as described.

2. In combination, the tab1e,'the'suctiontube having eccentric journals, the gearing on the said journals and the segment t and rack 'uP engaging the same, substantially as described.

In witness whereof I have hereuntoset my hand in presence of two witnesses.

LOUIS GERG.

Witnesses HENRY GI VE, STANRA BEYER. 

